spi: aspeed: Improve handling of shared SPI

Merge series from Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>:

This patch series improves handling of SPI controllers that are
shared by spi-mem devices and other SPI peripherals.

The primary goal of this series is to support non-spi-mem devices in
the ASPEED FMC/SPI controller driver. It also addresses an issue in
the spi-mem framework observed when different types of SPI devices
operate concurrently on the same controller, ensuring that spi-mem
operations are properly serialized.

9 files changed, 91 insertions, 13 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d8ca5b6e88e0..89022e9f393b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1661,7 +1661,7 @@ static void backup_super_roots(struct btrfs_fs_info *info)
 	btrfs_set_backup_chunk_root_level(root_backup,
 			       btrfs_header_level(info->chunk_root->node));
 
-	if (!btrfs_fs_compat_ro(info, BLOCK_GROUP_TREE)) {
+	if (!btrfs_fs_incompat(info, EXTENT_TREE_V2)) {
 		struct btrfs_root *extent_root = btrfs_extent_root(info, 0);
 		struct btrfs_root *csum_root = btrfs_csum_root(info, 0);
 
@@ -3255,6 +3255,15 @@ int btrfs_check_features(struct btrfs_fs_info *fs_info, bool is_rw_mount)
 	return 0;
 }
 
+static bool fs_is_full_ro(const struct btrfs_fs_info *fs_info)
+{
+	if (!sb_rdonly(fs_info->sb))
+		return false;
+	if (unlikely(fs_info->mount_opt & BTRFS_MOUNT_FULL_RO_MASK))
+		return true;
+	return false;
+}
+
 int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_devices)
 {
 	u32 sectorsize;
@@ -3363,6 +3372,10 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
 	if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_ERROR)
 		WRITE_ONCE(fs_info->fs_error, -EUCLEAN);
 
+	/* If the fs has any rescue options, no transaction is allowed. */
+	if (fs_is_full_ro(fs_info))
+		WRITE_ONCE(fs_info->fs_error, -EROFS);
+
 	/* Set up fs_info before parsing mount options */
 	nodesize = btrfs_super_nodesize(disk_super);
 	sectorsize = btrfs_super_sectorsize(disk_super);
@@ -3489,6 +3502,10 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
 	    fs_info->generation == btrfs_super_uuid_tree_generation(disk_super))
 		set_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags);
 
+	if (unlikely(btrfs_verify_dev_items(fs_info))) {
+		ret = -EUCLEAN;
+		goto fail_block_groups;
+	}
 	ret = btrfs_verify_dev_extents(fs_info);
 	if (ret) {
 		btrfs_err(fs_info,
diff --git a/fs/btrfs/fs.h b/fs/btrfs/fs.h
index 0f7e1ef27891..8ffbc40ebe45 100644
--- a/fs/btrfs/fs.h
+++ b/fs/btrfs/fs.h
@@ -264,6 +264,14 @@ enum {
 	BTRFS_MOUNT_REF_TRACKER			= (1ULL << 33),
 };
 
+/* These mount options require a full read-only fs, no new transaction is allowed. */
+#define BTRFS_MOUNT_FULL_RO_MASK		\
+	(BTRFS_MOUNT_NOLOGREPLAY |		\
+	 BTRFS_MOUNT_IGNOREBADROOTS |		\
+	 BTRFS_MOUNT_IGNOREDATACSUMS |		\
+	 BTRFS_MOUNT_IGNOREMETACSUMS |		\
+	 BTRFS_MOUNT_IGNORESUPERFLAGS)
+
 /*
  * Compat flags that we support.  If any incompat flags are set other than the
  * ones specified below then we will fail to mount
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 2d9d38b82daa..6cffcf0c3e7a 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2798,7 +2798,7 @@ static int replay_one_buffer(struct extent_buffer *eb,
 
 	nritems = btrfs_header_nritems(eb);
 	for (wc->log_slot = 0; wc->log_slot < nritems; wc->log_slot++) {
-		struct btrfs_inode_item *inode_item;
+		struct btrfs_inode_item *inode_item = NULL;
 
 		btrfs_item_key_to_cpu(eb, &wc->log_key, wc->log_slot);
 
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 13c514684cfb..8a08412f3529 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1364,7 +1364,9 @@ struct btrfs_super_block *btrfs_read_disk_super(struct block_device *bdev,
 				      (bytenr + BTRFS_SUPER_INFO_SIZE) >> PAGE_SHIFT);
 	}
 
+	filemap_invalidate_lock(mapping);
 	page = read_cache_page_gfp(mapping, bytenr >> PAGE_SHIFT, GFP_NOFS);
+	filemap_invalidate_unlock(mapping);
 	if (IS_ERR(page))
 		return ERR_CAST(page);
 
@@ -7257,6 +7259,7 @@ static int read_one_dev(struct extent_buffer *leaf,
 			return -EINVAL;
 		}
 	}
+	set_bit(BTRFS_DEV_STATE_ITEM_FOUND, &device->dev_state);
 	set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
 	if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
 	   !test_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state)) {
@@ -8083,6 +8086,45 @@ int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info)
 }
 
 /*
+ * Ensure that all devices registered in the fs have their device items in the
+ * chunk tree.
+ *
+ * Return true if unexpected device is found.
+ * Return false otherwise.
+ */
+bool btrfs_verify_dev_items(const struct btrfs_fs_info *fs_info)
+{
+	struct btrfs_fs_devices *seed_devs;
+	struct btrfs_device *dev;
+	bool ret = false;
+
+	mutex_lock(&uuid_mutex);
+	list_for_each_entry(dev, &fs_info->fs_devices->devices, dev_list) {
+		if (!test_bit(BTRFS_DEV_STATE_ITEM_FOUND, &dev->dev_state)) {
+			btrfs_err(fs_info,
+			"devid %llu path %s is registered but not found in chunk tree",
+				  dev->devid, btrfs_dev_name(dev));
+			ret = true;
+		}
+	}
+	list_for_each_entry(seed_devs, &fs_info->fs_devices->seed_list, seed_list) {
+		list_for_each_entry(dev, &seed_devs->devices, dev_list) {
+			if (!test_bit(BTRFS_DEV_STATE_ITEM_FOUND, &dev->dev_state)) {
+				btrfs_err(fs_info,
+			"devid %llu path %s is registered but not found in chunk tree",
+					  dev->devid, btrfs_dev_name(dev));
+				ret = true;
+			}
+		}
+	}
+	mutex_unlock(&uuid_mutex);
+	if (ret)
+		btrfs_err(fs_info,
+"remove the above devices or use 'btrfs device scan --forget <dev>' to unregister them before mount");
+	return ret;
+}
+
+/*
  * Check whether the given block group or device is pinned by any inode being
  * used as a swapfile.
  */
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 34b854c1a303..f20abeb16bce 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -100,6 +100,9 @@ enum btrfs_raid_types {
 #define BTRFS_DEV_STATE_FLUSH_SENT	(4)
 #define BTRFS_DEV_STATE_NO_READA	(5)
 
+/* Set when the device item is found in chunk tree, used to catch unexpected registered device. */
+#define BTRFS_DEV_STATE_ITEM_FOUND	(7)
+
 /* Special value encoding failure to write primary super block. */
 #define BTRFS_SUPER_PRIMARY_WRITE_ERROR		(INT_MAX / 2)
 
@@ -893,6 +896,7 @@ enum btrfs_raid_types __attribute_const__ btrfs_bg_flags_to_raid_index(u64 flags
 int btrfs_bg_type_to_factor(u64 flags);
 const char *btrfs_bg_type_to_raid_name(u64 flags);
 int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info);
+bool btrfs_verify_dev_items(const struct btrfs_fs_info *fs_info);
 bool btrfs_repair_one_zone(struct btrfs_fs_info *fs_info, u64 logical);
 
 bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr);
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 6800886c4d10..baa2f2141146 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2750,8 +2750,13 @@ static void wait_sb_inodes(struct super_block *sb)
 		 * The mapping can appear untagged while still on-list since we
 		 * do not have the mapping lock. Skip it here, wb completion
 		 * will remove it.
+		 *
+		 * If the mapping does not have data integrity semantics,
+		 * there's no need to wait for the writeout to complete, as the
+		 * mapping cannot guarantee that data is persistently stored.
 		 */
-		if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
+		if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK) ||
+		    mapping_no_data_integrity(mapping))
 			continue;
 
 		spin_unlock_irq(&sb->s_inode_wblist_lock);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 01bc894e9c2b..3b2a171e652f 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -3200,8 +3200,10 @@ void fuse_init_file_inode(struct inode *inode, unsigned int flags)
 
 	inode->i_fop = &fuse_file_operations;
 	inode->i_data.a_ops = &fuse_file_aops;
-	if (fc->writeback_cache)
+	if (fc->writeback_cache) {
 		mapping_set_writeback_may_deadlock_on_reclaim(&inode->i_data);
+		mapping_set_no_data_integrity(&inode->i_data);
+	}
 
 	INIT_LIST_HEAD(&fi->write_files);
 	INIT_LIST_HEAD(&fi->queued_writes);
diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c
index f585359684d4..e4273932e7e4 100644
--- a/fs/smb/server/transport_rdma.c
+++ b/fs/smb/server/transport_rdma.c
@@ -1353,14 +1353,12 @@ static int get_sg_list(void *buf, int size, struct scatterlist *sg_list, int nen
 
 static int get_mapped_sg_list(struct ib_device *device, void *buf, int size,
 			      struct scatterlist *sg_list, int nentries,
-			      enum dma_data_direction dir)
+			      enum dma_data_direction dir, int *npages)
 {
-	int npages;
-
-	npages = get_sg_list(buf, size, sg_list, nentries);
-	if (npages < 0)
+	*npages = get_sg_list(buf, size, sg_list, nentries);
+	if (*npages < 0)
 		return -EINVAL;
-	return ib_dma_map_sg(device, sg_list, npages, dir);
+	return ib_dma_map_sg(device, sg_list, *npages, dir);
 }
 
 static int post_sendmsg(struct smbdirect_socket *sc,
@@ -1431,12 +1429,13 @@ static int smb_direct_post_send_data(struct smbdirect_socket *sc,
 	for (i = 0; i < niov; i++) {
 		struct ib_sge *sge;
 		int sg_cnt;
+		int npages;
 
 		sg_init_table(sg, SMBDIRECT_SEND_IO_MAX_SGE - 1);
 		sg_cnt = get_mapped_sg_list(sc->ib.dev,
 					    iov[i].iov_base, iov[i].iov_len,
 					    sg, SMBDIRECT_SEND_IO_MAX_SGE - 1,
-					    DMA_TO_DEVICE);
+					    DMA_TO_DEVICE, &npages);
 		if (sg_cnt <= 0) {
 			pr_err("failed to map buffer\n");
 			ret = -ENOMEM;
@@ -1444,7 +1443,7 @@ static int smb_direct_post_send_data(struct smbdirect_socket *sc,
 		} else if (sg_cnt + msg->num_sge > SMBDIRECT_SEND_IO_MAX_SGE) {
 			pr_err("buffer not fitted into sges\n");
 			ret = -E2BIG;
-			ib_dma_unmap_sg(sc->ib.dev, sg, sg_cnt,
+			ib_dma_unmap_sg(sc->ib.dev, sg, npages,
 					DMA_TO_DEVICE);
 			goto err;
 		}
@@ -2708,6 +2707,7 @@ int ksmbd_rdma_init(void)
 {
 	int ret;
 
+	smb_direct_port = SMB_DIRECT_PORT_INFINIBAND;
 	smb_direct_listener.cm_id = NULL;
 
 	ret = ib_register_client(&smb_direct_ib_client);
diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c
index f891344bd76b..b8e648b8300f 100644
--- a/fs/smb/server/vfs.c
+++ b/fs/smb/server/vfs.c
@@ -1227,7 +1227,7 @@ int ksmbd_vfs_kern_path(struct ksmbd_work *work, char *filepath,
 }
 
 /**
- * ksmbd_vfs_kern_path_start_remove() - lookup a file and get path info prior to removal
+ * ksmbd_vfs_kern_path_start_removing() - lookup a file and get path info prior to removal
  * @work:		work
  * @filepath:		file path that is relative to share
  * @flags:		lookup flags